What are the degrees of freedom used to test the significance of the slope in a simple linear regression equation?
A)n − 1
B)n − 2
C)n − 1,n − 2
D)(n − 1)(n − 2)

Question

Quizplus · Accepted Answer

The degrees of freedom used to test the significance of the slope in a simple linear regression equation is n-2. This is because we lose one degree of freedom for estimating the slope and another degree of freedom for estimating the intercept. Therefore, the correct choice is B (n-2).

What Are the Degrees of Freedom Used to Test the Significance